What are the 12 organizational structures

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Across
  1. 5. macromolecule
  2. 8. chemicals
  3. 10. molecule
  4. 12. organsystem
Down
  1. 1. tissues
  2. 2. atom
  3. 3. tissue
  4. 4. organism
  5. 6. cellular
  6. 7. chemical
  7. 9. cells
  8. 11. organ